harmonic balancer center bolt stripped
Junior Member
Joined: Mar 2004
Posts: 54
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From: North Denver area
Car: 1989 Iroc-Z
Engine: 305 TPI
Heli-Coil
You could also try to use a tap and thread the hole to fit a different size bolt. Is it completely stripped or just the first part of the threads stripped ?
You could also try to use a tap and thread the hole to fit a different size bolt. Is it completely stripped or just the first part of the threads stripped ?
Supreme Member
Joined: Apr 2004
Posts: 3,067
Likes: 0
From: Staunton,illinois
Car: 1966 impala , 1998 sebring vert,1978 buick regal turbo, 1991 chevy silverado 3/4ton 4x4 lifted
Engine: 283, 2.5,3.8 turbo 350
Transmission: powerglide,auto overdrive, th350,4L80
how deep on the bolt is it stripped???
id get a new bolt for it and a tap and clean the threads out really good and see if it will work
id get a new bolt for it and a tap and clean the threads out really good and see if it will work
Senior Member
Joined: Jan 2001
Posts: 677
Likes: 0
From: Denver, CO
The stock hole in the crank is 7/16" x 20
The next size bolt is 1/2" x 20
First try to tap the existing hole with the 7/16" tap. Make sure that the bolt has clean threads.
If the threads are too buggered up, then tap with 1/2" x 20 and buy a larger bolt. Also any of the 7/16" threads will help guide the 1/2" tap.
The next size bolt is 1/2" x 20
First try to tap the existing hole with the 7/16" tap. Make sure that the bolt has clean threads.
If the threads are too buggered up, then tap with 1/2" x 20 and buy a larger bolt. Also any of the 7/16" threads will help guide the 1/2" tap.
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